Repair, buy a new or buy a nearly new pram chassis?

Mamas and papas X cel chassis (am naming and shaming!) fellapart about 6 months ago. Now I need to do something as I need it for DS2 so rung M & Ps and it's £245 for a new one. On ebay there is a 'only used inside' one for £110 (but then will that fall apart too?) or M & P can repair mine (no idea of cost, out of warrenty now). WWYD? Anyone have any ideas of repair costs? I dont really ant it to be more then £110, and definatly not more than £245! Thanks